I got about $1,200 ready to buy a bike. I plan on getting a Specialized Allez 2009, but I'm not sure what to look for. Can I do 90 miles with that bike? Is there a better option? How do you switch the gears when riding with a road bike? The guy showed me and apparently you move the brake to the right to switch it. I'm not sure. What accesories are vital to cycling? Thanks.